The way I see it, if the federal government will not fulfill its Constitutional mandate, it is up to the Governor of the several states to do so. This means that we must compel Arnold Schwarzenegger of California, along with the AZ, NM, and TX Governors to "BUILD THAT FENCE" that Travis has been showing us photos of. People, it is "we the people" who have the power in our form of government. Now we must use it. Our elected representatives are our "SERVANTS" not our "LORDS" and we must show them this.
I am by no means a Constitutional authority, but the way I read it the States do have the duty and responsibility to pick up the slack left by our federal government's inaction.